Security Hardening

How to Deploy a Zend Framework Application on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Deploy a Zend Framework Application on SLES 15

Introduction This tutorial covers How to Deploy a Zend Framework Application on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: […]

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FreeBSD 12 — paraview — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — paraview — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: tiff — buffer overflow vulnerability Related CVEs: CVE-2004-0803 CVE-2004-0804 CVE-2004-0886 CVE-2004-1308 CVE-2005-1544 Upstream summary: A Gentoo Linux Security Advisory reports: Tavis Ormandy of the Gentoo Linux Security Audit Team discovered […]

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How to Set Up Yubikey Authentication on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Yubikey Authentication on Debian 9

Introduction How to Set Up Yubikey Authentication on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 9. […]

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Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide (ELSA-2019-1580)

🟠 High   ⏱ 15–60 min  Last verified: 8 January 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-1580 Related CVEs: CVE-2019-10161 CVE-2019-10166 CVE-2019-10167 CVE-2019-10168 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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openSUSE Tumbleweed — msmtp — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — msmtp — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2019-8337 Upstream summary: In msmtp 1.8.2 and mpop 1.4.3, when tls_trust_file has its default configuration, certificate-verification results are not properly checked. Table of contents Symptom […]

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Common Problems 115525

RHEL 7 sshd Fails Start Due To StrictModes Permissions

🟠 High   ⏱ 5–30 min  Last verified: 7 January 2020 Affected versions: RHEL 7 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Common Problems 113045

Windows Server 2016 – RunAs fails with logon type 2 not granted – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 7 January 2020 Affected versions: Windows Server 2016 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Alpine Linux edge — pango — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — pango — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.44.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — pango 1.44.1-r0 Related CVEs: CVE-2019-1010238 Upstream summary: Alpine main repository for vedge ships pango 1.44.1-r0 which addresses CVE-2019-1010238. Table of contents Symptom & Impact Environment […]

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FreeBSD 12 — php55-ftp — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php55-ftp — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php5 — multiple vulnerabilities Related CVEs: CVE-2015-4643 CVE-2015-4644 Upstream summary: The PHP project reports: DOM and GD: Fixed bug #69719 (Incorrect handling of paths with NULs). FTP: Improved fix for […]

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